Slab for railway crossings



Nov.- 17 1925- F'. D. COPPOCK SLAB FOR RAILWAY CROSSINGS Filed Aug. 14.1925. 2 Sheets-Sheet 2 Fig.6; 4-

& Z a I If 23 za Z3 v IN V EN TOR. Ire derzzfl'fiazzylaa' 00 0 0061; Y

ATTORNEY.

- CoPPooK, a citizen of the United States,

Patented Nov. 17, 1925.

UNITED STATES ATENT, OFFICE.

FREDERICK DOUGLAS COPPOCK, OF GREENVILLE, OI-IIO.

SLAB FOR RAILWAY CROS SINGS.

Applicatiofil filed au ust 14, 1925. Serial No. 50,292. K

To all whom, it may concern:

Be it known that I, FREDERICK DOUGLAS slab having both of its facesuniform to purpose aforesaid, and which is simple in itsexpedite thelaying thereof, as well as to permit of the reversal of the slabwhen'ocas well as its sides, uniform to enable the positioning of theslab from either end or side. I

A further object of the invention isito pro-" vide, in a manner ashereinafter set forth, an

armored slab having each of its faces rein--- forced at the marginalportion thereof throughout to increase the life of the slab and to takethe wear.

A. further object of the invention isto provide,in a manner ashereinafter set forth, a slab having armored sides and ends," and a weartake means on'eachiof its faces where by the strength and durability ofthe slab is materially enhanced.

Further objects of the'inventi on are to provide, in a, manner ashereinafter set forth, a reinforced composite slab for the construction,strong, durable, of standard form, thoroughly efficient inuse,conveniently' installed, and lnexpensive to manufacture.

With the foregoing and other objects in view the invention consists ofthe novel construction, combination and arrangement of parts ashereinafter more speclfically described, and illustrated in theaccompanying drawings wherein is shown an embodiment of the invention,but it is to be understood that changes, variations and modificationscan be resorted to which fall within the scope of the claims herewith.

In the drawings wherein like reference characters denote correspondingparts throughout the several views Figure 1 is a plan view of acomposite slab 111 accordance wlth this invention.

Figure 2 is a longitudinal sectional view thereof.

Figure 3 1s a transverse section.

Figure 4 is a plan View of the combined armor and reinforcing element.

Figure -5 1s 'a'longitudinal section, Figure 6 a transverse section andF igure' 7 a fragmentary view in sectional elevation 'of said ele'men rFigure 8 is a top plan view of a railway crossing constructed with slabsin accordance with this invention. I

'Figure '9 is a section on line 99 of Figure 8; oasion requires, andfurther having its ends ,F'gu're 10 is a section on line '1010 of Figure8.

Figure 11 is a fragmentary view, in plan, of a modified form ofcrossing.

Referring to Figures 1 to 6 of the drawings, the slab, inaccordanceiwith this invention, comprises a combined "armor andreinforcing element and a body portion formed from plastic materialpreferably cement. The element aforesaid further functions as a mold orshaping element for the body portion.

The combined armor and reinforcingelement, is, of any suitable shape,pre rably rectangular, of the desired width, heig t and length, and ofstandard dimensions as five inches in height, six feet in length andsix:

teen and one-half inches in width.

Both faces of the slab are uniform so the latter can be reversed or setupon either face, and this arrangement also applies to the ends andsides. The element includes a frame constructed of metallic material ofthe desired thickness and comprises a pair of side walls -1, 2 and apairof end walls 3, 4.

Each of said walls has its edges of greater thickness than the remainingport-ion thereof, and which is formed by an inclined ofiset on the innerface of each wall at the top and bottom thereof. Theoifsets of each wallare oppositely disposed with respect to each other and each graduallyincreases in thickness from. its inner end toward its outerv end. Eachoffset extends lengthwise throughout with'respect to its wall and the Y'larged edges of the said side and end walls.

offsets of the side Walls terminate in the offsets of the end walls.Each of said offsets is of a heightmaterially less than half the heightof its respective wall. The offsets not only increase the width of theedges of the walls for the purpose to take the wear upon the exposedface of the slab, but further act as anchoring means for maintaining thebody portion within the combined armor and reinforcing element.

The enlarged edges ofthe side and end walls are indicated respectivelyat 5, 6, and 7, 8. The offsets on the inner faces of the side and endwalls are indicated respectively at.9,10 and 11, 12. y

Velded with the inner faces of the side walls 1, 2, are the ends of twosuperposed sets of transversely extending, spaced, cylindrical brace andreinforcing rods or bars. The rodsof one set are indicated at 13 andthose of the other at v1 Welded with .the inner faces of thesend walls,3, 4, are the ends of two superposed sets of longitudinally extending,spaced, cylindrical brace and re,

' inforcing rods and the rods of one of said sets are indicated at 15and those of theother set at 16'. The rods 15 and 16' seat 'on therods13, 14 respectively. The rods 13' and 3d 15 are positidned betweenthe longitudinal median and one side and the rods 14 and 16 4 arearranged between the longitudinal median and the other side of the.frame. The ends of the several sets of rods are spacedfrom the innertermini of the offsets on the v inner faces of the walls of theframe.

The body portion of the slab. isindicated at 17, is formed of asuitable'plastic mate- .rial, such as cement,-and is poured into theframe, envelopes the reinforcing rods and .is of such quantity to beflush with the en- The material abuts against the inner faces of saidwallsand is overlappedby said ofiset portions, see'Figures '2 and 3,whereby after the material h'ardens the body portion is anchoredthroughout at the top and bot-- tom of its sides and ends, under whichconditions a separation of the frame and body portion is prevented.-

Referi 'ng to Figures 8,1) and 1G; a railway crossing isset up includinga series of slabs, in accordance with this invention. The slabs. arearranged in courses and are. indicated' 18, thetrack rails at 19,20,-wedge members"between an opposed'pair of the courses of the slabs at21, filler elements between a pair of thecourses of the slabs and trackrails at '22, 23, supporting shims l filler elementsfand the. 'shims areof wood.

' at 24, a filler between the pair "of opposed slab courses at 25,'and aconcrete retaining means-at each end of the courses, at 26. The crossingextends at an an 1e with respect to the track rails." The wedges are ofwood and the filler between them is bitumen. The

-of the courses of the slabs 27 are flush with each other.

What I claim is 1. A. slab comprising a combined armor and reinforcingelement including a metallic frame having arranged therein and connected.therewith spaced reinforcing bars, and a body lportion of non-metallicmaterial completely lling and flush with the slide and end edges of theframe, said body por tion completely enveloping said rods...

The wedges bind the courses ar- 2. A slab comprising a combined armorand-reinforcing element including a metallic frame having arrangedtherein and connected therewith spaced reinforcing bars, and a bodyportion ofnon-metallic material completely filling and flush with theside and. end edges of the frame, said body por tion'completelyenveloping said rods, said frame provided with means on the inner facethereof for overlapping said body portion to anchon the latter withinthe frame. 3. A. slab comprising a combined armor and reinforcingelement including a metallic frame having arranged therein and.conneeted therewith spaced, reinforcing bars, and a body portion ofnon-metallic material completely filling and flush with the side and fend edges of the frame, said body ortion compietely enveloping saidrods, sai framev provided with means on the inner face thereof foroverlapping said body portion to anchor the latter within the frame,said, said means extending throughout the inner face of each of thewalls of said frame at each lengthwise ,marginal portion thereof,

the means on the marginal portions of each of said walls beingoppositely disposed and further increasing the width of the edges ofits'resp'ective wall, and said slab being reversible. Q a

4. A slab comprising a combined armor and'reinforci'ng element includinga metallic frame having arr'anged therein and connected therewith spacedreinforcing rods, and

a body portion of non-metallic material com- .pletely filling and flushwith the side and.

end edges of the frame, said body portion completely enveloping saidrods, said rods extending transversely; and longitudinally of id frame.i

.10 of for overlappin 1 l' I 5. A slab com r1s1ng a combined armor;

ed therewith spaced reinforcing rods, and a 5 body portionofnon-metallic \material completely filling and flush Wlth thB side andend edges of the frame, said body portion completely enveloping saidrods, said frame provided with means on the inner face theresaidbodyportion to anchor the latter within the frame, said rods extepdingtransversely and longitudinally of 7 said frame. 7 v

'6. A slab comprising a combined armor and reinforcing element includinga metallic frame having arranged therein and connect- ,ed therewithspaced reinforcing rods,- and a body portion of non-metallic materialcompletely filling and flush with the side and endedges of the frame,said body portion completelyenveloping said rods, said frame providedwith means on the inner face tlfere- 1 of for overlapping"said bodyportion to.

anchor the latter within the frame, said means extending throu hou't theinner face of each, of the walls 0 said frame at'each lengthwisemarginal portion thereof, the means on the marginal portions of each ofsaid walls being oppositely disposed and so further increasing the widthof the edges of its res ective wall,'said rods extending transverse yandlongitudinally of sai frame, and said slab being 'reversible.

7. A slab comprisin' a non-metallic body portion, and ametal ic framecompletely JPBL ing the sid es/and ends*ofsaid bod portion, said'fFamehaving its edges flus and provided onits inner face with op ositeldisposed inclined offsets overlapping the ody portion for 'I'anchoring'it withinthe frame, said offsets increasing thewidth of the edges of theframe, and said slab being reversible. I i

8. A slab com rising anon-metallic body pofitlon, a meta lic frame comletely enclosing the sides and ends of 'sai body portion, said framehaving its edges flush with the exposed faces of. said body portion and'50 provided on its inner face with oppositely dlsposed inclined offsetsoverlapping the body portion for anchoring it within the frame, saidoffsets increasing the width of the edges of the frame, and superposedsets of longitudinally and transversely extending reinforcingrodsenvelope'd by said body por tion.

9. A railwaycrossing comprising a plurality of courses of exteriorlyarmored and 'interiorly reinforced-slabs arranged within' andexteriorlyof a pair of track rails, spaced wedges interposed between a pair'of oposed courses arranged between the rails, fili er e1e-- Inentspositionedbetween the track rails and certain ofthe courses arranged between saidrails, filler elements ositioned between the courses exteriorly of tiletrack rails and these latter, and filler means between said wedges. 10.A railway crossing comprising a plural ity of courses'of exteriorlyarmored and interiorly reinforced slabs arranged within and exteriorlyof a air of track rails, spaced wedges interpose between a pair ofopposed courses arranged between the rails, filler elements positionedbetween the track rails and certain of the courses arranged between saidrails, fillerelements positioned between the courses exteriorly of thetrack rails and these latter, filler means between said with the exposedfaces of said body portion wedges, and shims for supporting said coursesat the desired height.

FltEDERICK '1). COPPOCK. 7

